Persistent Aircraft system

[Precog]

similar to the logic implemented by heatblur phatom module:

Persistent Aircraft system: allows saving and loading the same aircraft—including its properties, wear, tear, and condition—across missions or campaigns. The aircraft state is automatically saved when successfully left on the ground.

Enabled via either the Mission Editor or Special Option.

If enabled through Special Option, press the “Initialize Persistent Aircraft State” keybind in-game to initialize aircraft state saving (LCTRL+P).

Aircraft is tracked by its livery and tail number.

Optionally, a Persistent Aircraft Key can be set in the Mission Editor to enforce specific airframe continuity across missions (useful for campaign builders). Mission Editor persistence settings override user Special Options.